<template>
  <!-- 添加和修改章节表单 -->
  <el-dialog :visible="dialogVisible" title="添加章节" @close="close()">
    <el-form :model="chapter" label-width="120px">
      <el-form-item label="章节标题">
        <el-input v-model="chapter.title"/>
      </el-form-item>
      <el-form-item label="章节排序">
        <el-input-number v-model="chapter.sort" :min="0"/>
      </el-form-item>
    </el-form>
    <div slot="footer" class="dialog-footer">
      <el-button @click="close()">取 消</el-button>
      <el-button type="primary" @click="saveOrUpdate()">确 定</el-button>
    </div>
  </el-dialog>
</template>

<script>
    import chapterApi from '@/api/vod/chapter'
    export default {

        data() {
            return {
                dialogVisible: false,
                chapter: {
                    sort: 0
                }
            }
        },
        methods: {
            open(chapterId) {
                this.dialogVisible = true
                if (chapterId) {
                    chapterApi.getById(chapterId).then(response => {
                        this.chapter = response.data.item
                    })
                }
            },

            close() {
                this.dialogVisible = false
                // 重置表单
                this.resetForm()
            },

            resetForm() {
                this.chapter = {
                    sort: 0
                }
            },

            saveOrUpdate() {
                if (!this.chapter.id) {
                    this.save()
                } else {
                    this.update()
                }
            },

            save() {
                this.chapter.courseId = this.$parent.$parent.courseId
                chapterApi.save(this.chapter).then(response => {
                    this.$message.success(response.message)
                    // 关闭组件
                    this.close()
                    // 刷新列表
                    this.$parent.fetchNodeList()
                })
            },

            update() {
                chapterApi.updateById(this.chapter).then(response => {
                    this.$message.success(response.message)
                    // 关闭组件
                    this.close()
                    // 刷新列表
                    this.$parent.fetchNodeList()
                })
            }
        }
    }
</script>
